<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style src="./index.css"></style>
    <script type="text/javascript" src="./../js/vue.js"></script>
</head>
<body>
    <div id="app">
        <div v-if="books.length">
            <table>
                <thead>
                    <tr>
                        <th></th>
                        <th>书籍名称</th>
                        <th>出版日期</th>
                        <th>价格</th>
                        <th>购买数量</th>
                        <th>操作</th>
                    </tr>
                </thead>
                <tbody>
                    <tr v-for="(item,index) in books">
                        <th>{{item.id}}</th>
                        <th>{{item.name}}</th>
                        <th>{{item.date}}</th>
                        <!-- 过滤器(管道符) 过滤器中第一个参数默认为被过滤的对象|过滤方法-->
                        <th>{{item.price|finalPrice}}</th>
                        <th>
                            <button type="button" @click="decrement(index)" v-bind:disabled="item.count<=1">-</button>
                            {{item.count}}
                            <button type="button" @click="increment(index)">+</button>
                        </th>
                        <th>
                            <button type="button" @click="removeBook(index)">移除</button>
                        </th>
                    </tr>
                </tbody>
            </table>
            <h2>总价格{{totalPrice|finalPrice}}</h2>
        </div>
        <h2 v-else>
            购物车为空
        </h2>
    </div>
    <script src="./index.js"></script>
</body>
</html>